Submission #651026

#	Time	Username	Problem	Language	Result	Execution time	Memory
651026		dooompy	Kitchen (BOI19_kitchen)	C++17	100 / 100	72 ms	119708 KiB

kitchen

#include "bits/stdc++.h"

using namespace std;

void abc() {cout << endl;}
template <typename T, typename ...U> void abc(T a, U ...b) {
    cout << a << ' ', abc(b...);
}
template <typename T> void printv(T l, T r) {
    while (l != r) cout << *l << " \n"[++l == r];
}
template <typename A, typename B> istream& operator >> (istream& o, pair<A, B> &a) {
    return o >> a.first >> a.second;
}
template <typename A, typename B> ostream& operator << (ostream& o, pair<A, B> a) {
    return o << '(' << a.first << ", " << a.second << ')';
}
template <typename T> ostream& operator << (ostream& o, vector<T> a) {
    bool is = false;
    for (T i : a) {o << (is ? ' ' : '{'), is = true, o << i;}
    return o << '}';
}

#ifdef local
#define test(args...) abc("[" + string(#args) + "]", args)
#else
#define test(args...) void(0)
#endif

using ll = long long;

int a[305], b[305];

int dp[305][100005]; //

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
//    freopen("", "r", stdin);
//    freopen("", "w", stdout);
    int n, m, k; cin >> n >> m >> k;

    int totala = 0;
    for (int i = 1; i <= n; i++) {
        cin >> a[i];
        totala += a[i];
        if (a[i] < k) {
            cout << "Impossible"; return 0;
        }
    }
    for (int i = 1; i <= m; i++) cin >> b[i];

    fill(&dp[0][0], &dp[0][0] + sizeof(dp) / sizeof(dp[0][0]), -1);
    dp[0][0] = 0;

    int sum = 0;
    for (int i = 1; i <= m; i++) {
        sum += b[i];
        for (int j = sum; j >= 0; j--) {
            if (dp[i-1][j] < 0) continue;
            dp[i][j] = dp[i-1][j];
            dp[i][j + b[i]] = max(dp[i][j + b[i]], dp[i-1][j] + min(n, b[i]));
        }
    }

    for (int i = totala; i <= 100000; i++) {
        if (dp[m][i] >= n * k) {
            cout << i - totala;
            return 0;
        }
    }

    cout << "Impossible";
}

• Subtask 1: 9 / 9
• Subtask 2: 22 / 22
• Subtask 3: 20 / 20
• Subtask 4: 21 / 21
• Subtask 5: 28 / 28